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Finding the Fourth Proportional to 86,479.91, 129,663.97 and 33,894.71

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Solution

The fourth proportional to 86,479.91, 129,663.97 and 33,894.71 is: 50,820.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,479.91 : 129,663.97 = 33,894.71 : x
  2. Step 2: Convert to fraction form
    86,479.91/129,663.97 = 33,894.71/x
  3. Step 3: Cross multiply
    86,479.91x = 129,663.97 × 33,894.71
  4. Step 4: Simplify right side
    86,479.91x = 4,394,922,900.02
  5. Step 5: Solve for x
    x = 4,394,922,900.02/86,479.91
  6. Step 6: Final answer
    x = 50,820.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.